*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg: #f1f5f9;--bg-card: #ffffff;--bg-card-hover: #e2e8f0;--text: #1e293b;--text-muted: #64748b;--primary: #0d9488;--primary-hover: #0f766e;--primary-light: rgba(13, 148, 136, .1);--border: #e2e8f0;--radius: 8px;--shadow: 0 1px 3px rgba(0, 0, 0, .06);--shadow-hover: 0 4px 12px rgba(13, 148, 136, .12);--font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}html{scroll-behavior:smooth}body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.navbar{position:fixed;top:0;left:0;right:0;z-index:100;background:var(--bg-card);border-bottom:1px solid var(--border);box-shadow:var(--shadow)}.navbar-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between}.navbar-logo{font-size:1.35rem;font-weight:700;letter-spacing:-.02em;color:var(--text)}.navbar-logo span{color:var(--primary)}.navbar-links{display:flex;align-items:center;gap:28px;list-style:none}.navbar-links a{font-size:.9rem;color:var(--text-muted);transition:color .2s}.navbar-links a:hover{color:var(--primary)}.lang-row{display:flex;align-items:center;gap:8px}.lang-label{font-size:.875rem;color:var(--text-muted);white-space:nowrap}.lang-select-wrap{position:relative}.lang-select{appearance:none;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:8px 32px 8px 12px;font-size:.875rem;color:var(--text);cursor:pointer;transition:border-color .2s,box-shadow .2s;min-width:100px}.lang-select:hover{border-color:var(--text-muted)}.lang-select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-light)}.lang-select-wrap:after{content:"";position:absolute;right:12px;top:50%;transform:translateY(-50%);width:0;height:0;border-left:5px solid transparent;border-right:5px solid transparent;border-top:5px solid var(--text-muted);pointer-events:none}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:var(--radius);font-weight:600;cursor:pointer;text-decoration:none;line-height:1;transition:background .2s,transform .2s,box-shadow .2s,border-color .2s,color .2s}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important;box-shadow:none!important}.btn-sm{padding:10px 24px;font-size:.9rem}.btn-md{padding:14px 32px;font-size:1rem}.btn-lg{padding:16px 40px;font-size:1.1rem}.btn-full{width:100%}.btn.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-hover);transform:translateY(-1px);box-shadow:0 4px 14px #0d94884d}.btn-secondary{background:transparent;color:var(--text);border:1px solid var(--border)}.btn-secondary:hover:not(:disabled){border-color:var(--primary);color:var(--primary);background:var(--primary-light)}.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:120px 24px 80px;position:relative;overflow:hidden;background:var(--bg-card)}.hero:before{content:"";position:absolute;top:-30%;left:50%;transform:translate(-50%);width:600px;height:600px;background:radial-gradient(circle,var(--primary-light) 0%,transparent 65%);pointer-events:none}.hero-content{max-width:720px;position:relative;z-index:1}.hero h1{font-size:clamp(2.5rem,6vw,3.75rem);font-weight:800;letter-spacing:-.03em;line-height:1.15;margin-bottom:24px;color:var(--text)}.hero p{font-size:1.2rem;color:var(--text-muted);max-width:540px;margin:0 auto 40px;line-height:1.7}.hero-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}.features{padding:100px 24px;max-width:1200px;margin:0 auto;background:var(--bg)}.section-header{text-align:center;margin-bottom:64px}.section-header h2{font-size:2.25rem;font-weight:700;letter-spacing:-.02em;margin-bottom:12px;color:var(--text)}.section-header p{color:var(--text-muted);font-size:1.1rem}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;transition:all .25s;box-shadow:var(--shadow)}.feature-card:hover{background:var(--bg-card);border-color:var(--primary);box-shadow:var(--shadow-hover);transform:translateY(-2px)}.feature-icon{width:48px;height:48px;border-radius:10px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:20px}.feature-card h3{font-size:1.15rem;font-weight:600;margin-bottom:8px;color:var(--text)}.feature-card p{color:var(--text-muted);font-size:.95rem;line-height:1.6}.services{padding:100px 24px;max-width:1200px;margin:0 auto}.services-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}.service-card{display:flex;align-items:center;gap:16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;box-shadow:var(--shadow);transition:all .25s;text-decoration:none;color:inherit;cursor:pointer}.service-card:hover{border-color:var(--primary);box-shadow:var(--shadow-hover);transform:translateY(-2px)}.service-icon{width:48px;height:48px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;flex-shrink:0}.service-info{flex:1;min-width:0}.service-info h3{font-size:1rem;font-weight:600;margin-bottom:2px;color:var(--text)}.service-info p{font-size:.85rem;color:var(--text-muted);line-height:1.4}.service-arrow{font-size:1.2rem;color:var(--text-muted);flex-shrink:0;transition:color .2s,transform .2s}.service-card:hover .service-arrow{color:var(--primary);transform:translate(4px)}.how-it-works{padding:100px 24px;max-width:1200px;margin:0 auto;background:var(--bg-card)}.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:32px;margin-top:64px}.step{text-align:center;padding:40px 24px}.step-number{width:56px;height:56px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.25rem;font-weight:700;margin:0 auto 20px}.step h3{font-size:1.15rem;font-weight:600;margin-bottom:8px;color:var(--text)}.step p{color:var(--text-muted);font-size:.95rem}.footer{border-top:1px solid var(--border);padding:48px 24px;text-align:center;background:var(--bg-card)}.footer-inner{max-width:1200px;margin:0 auto}.footer p{color:var(--text-muted);font-size:.9rem}.footer p:first-child{margin-bottom:8px}@media(max-width:768px){.navbar-links{gap:16px}.lang-label{display:none}.hero{padding:100px 16px 60px}.features,.how-it-works{padding:60px 16px}}.tool-page{min-height:100vh;display:flex;flex-direction:column;background:var(--bg)}.tool-content{flex:1;max-width:560px;margin:0 auto;padding:100px 24px 80px}.tool-title{font-size:2rem;font-weight:700;color:var(--text);margin-bottom:12px}.tool-description{color:var(--text-muted);margin-bottom:32px;line-height:1.6}.tool-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}.tool-file-label{position:relative;display:flex;align-items:center;justify-content:center;width:100%;min-height:120px;border:2px dashed var(--border);border-radius:var(--radius);cursor:pointer;transition:border-color .2s,background .2s;margin-bottom:20px}.tool-file-label:hover{border-color:var(--primary);background:var(--primary-light)}.tool-file-text{color:var(--text-muted);font-size:.95rem}.tool-file-input{position:absolute;width:0;height:0;opacity:0;pointer-events:none}.tool-message{padding:12px 16px;border-radius:var(--radius);font-size:.95rem;margin-bottom:16px;font-weight:500}.tool-message-error{background:#e74c3c1f;color:#c0392b;border:1px solid rgba(231,76,60,.35)}.tool-message-success{background:#0d94881f;color:var(--primary);border:1px solid rgba(13,148,136,.35)}.tool-error{color:var(--primary);font-size:.9rem;margin-bottom:16px}